Measurement of Matter

SI Units

10

SI unit and symbol for temperature

Kelvin (K)

20

SI unit and symbol for mass

kilogram (kg)

30

What is the name given to the unit that equals 10³ gram?

kilogram

40

What is the name given to the unit that equals 10^-12 meter?

picometer

50

Express the measurement 2.5 x 10^-2g using a prefix to replace the power of 10

2.5 cg

Scientific Notation

10

Write 105 in scientific notation

1.05 x 10²

20

Write 0.000911 in scientific notation

9.11 x 10^-4

30

(1.2 x 10³) + (1.7 x 10³) =

2.9 x 10³

40

(1.2 x 10^-6) x (2.0 x 10³) =

2.4 x 10^-3

50

(3.19 x 10⁴) - (3.24 x 10³) =

2.866 x 10⁴

Significant Figures

10

How many significant figures in 101?

3

20

How many significant figures in 0.01010?

4

30

Perform the following calculation to the correct number of significant figures:

79.25 + 10.2 =

89.5

40

Perform the following calculation to the correct number of significant figures:

1035 ÷ 2.0 =

520 or 5.2 x 10

50

Perform the following calculation to the correct number of significant figures:

(17.25 + 2.50) ÷ 2.00 x 10³ =

9.88 x 10^-3

Dimensional Analysis

10

115 lb = _____ kg

52.3 kg

20

1.26 m = ____ in

49.6 in

30

6.75 L = ____ m³

0.00675 m³ or 6.75 x 10^-3 m³

40

0.91 g/cm³ = ____ kg/m³

910 kg/m³

50

5.15 m/s = _____ mi/hr

*1 mi = 1.6093 km

11.5 mi/hr

Temp Conversion and Density Calculations

10

456 K = _____ ^oC

183 ^oC

20

315 ^oC = _____ ^oF

599 ^oF

30

103 ^oF = _____ K

312.6 K

40

What is the identity of a rock weighing 712 g at a volume of 259 cm³?

diorite: 2.86 g/cm³

granite: 2.75 g/cm³

quartz: 2.62 g/cm3

granite

50

What is the mass in grams of a 2.50 cm-brass cube with density of 8.70 g/cm³?

136 g